Hi all. 

 

I took oil my car in for an inspection service yesterday and when I got to the dealership the lady told me that there were 2 outstanding recalls. 1 for a software update to the parking brake and 1 for a software update for the battery. 

 

When end I got back in the car and drive home yesterday all seemed well and again this morning in the way to work. 

 

However tonight ive had no start stop at all which is the first time this has happened since I’ve had the car and also the parking brake now does not stay on when I put the car into neutral and take my foot off the clutch. The brake releases and I either have to hold my car on the foot brake or let it roll and the engage the parking brake again. 

 

The brake doesnt hold eother woth the auto hold turned on or off. The brake engage when the engine is switched off. 

 

Obviously there is is no one there to talk to now but I can’t work out wether things were fine yesterday and today or I just haven’t noticed it. 

 

I will ring them tomorrow but if seems seems very coincidental that these issues have not been present at all but now are after software updates. 

 

Have any any of you guys experienced either of these? 

 

Thanks

adrian 

Sometimes, especially in this cold weather, the stop/start will be disabled until the battery gets up to full charge. I've driven for 15-20 minutes before the s/s will kick in again.

 

Don't know about the parking brake.

My drive to work and back is at least an hour each way on the motorway so it cant be that. Also it has never not worked. Even in the snow we had a little while ago it worked. 

 

 

I've had the issue with the parking brake releasing even when I'm in neutral, when it does it it's then a hard fault for the time being but is then gone the next day.  As an example, it did it at the start of my journey home, and when I got home an hour later it was still doing it - but gone the next morning. 

 

In just over two years with the car it has done it maybe 3 or 4 times, and the garage couldn't replicate so I've just put it down to experience (and always check the green light stays on when I take my foot off the clutch!!).

When you are driving the electronic parking brake is not what holds you unless you pull the switch up.  It is the service brake holding hydraulic pressure on the brakes (hence the green light).  If the red light is on then that is the Parking brake.  It’s also why you hear the actuators going as you switch off (and the light changes colour).  The only time mine has failed to hold is a if I pull up with very gentle braking (and the Stop/Start also fails to notice so keeps the engine running).  A quick ‘stab’ of the brakes pulls everything to a stop (inc the engine).

 

It sounds more that the auto-hold isn’t latching the service brake on when you lift your foot off the brakes.  Definitely not how it should work.  I don’t know if there is a subtle difference for DSG equipped cars?

Edited 27 March, 20188 yr by FelisBengalensis

On the occasions that the brake has released on my car it's been with both the parking brake (pulled lever) and auto hold.  The first time it happened I didn't even have auto hold on, hadn't read that part of the manual!  Someone here mentioned it, thank goodness!

I’ve had it happen on a VW Passat B8 which is the same car underneath it all. Anyone had there’s fixed? My local garage are not interested unless it does it in their workshop, regardless of video evidence.

I must admit after that initial problem the day after the software update the car has been fine. I did pull up the handbrake switch the day after whilst the car was moving Fairly slowly. Scary stuff!!! I didnt realise the brake would engage! Being electronic I thought it wouldn’t work whilst the vehicle was moving.   But the auto hold and stop start have been faultless since.